The Dynavector should be a big upgrade over the Denon and a better match with your tonearm as well. The Dynavector uses a modern stylus profile that will dig up a lot more detail than what you're getting now with the Denon. If everything is setup correctly this should not fall under the same category as interconnect and cable upgrade.
Should I replace Denon DL-103R with Dynavector DRT-XV1 mounted
I have been using Denon DL-103R mounted on SME-IV arm for a quite some time. It is the only cartridge I have ever had. Now I have an opportunity to purchase Dynavector DRT-XV1 for a good price. Since I have never had a chance to listen to another cartridge I am not sure what to expect from another cart in term of sound quality. I wonder if replacing Denon with 10 times more expensive Dynavector would result to a noticeable sound difference assuming the rest of the system is capable to reproduce the sound Dynavector cart delivers? Or does the cartridge upgrade fall under the same category with cables and interconnects upgrades where some listeneres can hear the difference and some not?